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# Copyright (C) 2012 Anaconda, Inc
# SPDX-License-Identifier: BSD-3-Clause
"""
This module contains a subclass implementation of pluggy's
`PluginManager <https://pluggy.readthedocs.io/en/stable/api_reference.html#pluggy.PluginManager>`_.

Additionally, it contains a function we use to construct the ``PluginManager`` object and
register all plugins during conda's startup process.
"""

from __future__ import annotations

import functools
import logging
import os
from importlib.metadata import distributions
from inspect import getmodule, isclass
from typing import TYPE_CHECKING, overload

import pluggy

from ..auxlib import NULL
from ..auxlib.ish import dals
from ..base.constants import APP_NAME, DEFAULT_CONSOLE_REPORTER_BACKEND
from ..base.context import context
from ..common.io import dashlist
from ..exceptions import (
    CondaValueError,
    EnvironmentExporterNotDetected,
    EnvironmentSpecPluginNotDetected,
    PluginError,
)
from . import (
    environment_exporters,
    environment_specifiers,
    package_extractors,
    post_solves,
    prefix_data_loaders,
    reporter_backends,
    solvers,
    subcommands,
    virtual_packages,
)
from .config import PluginConfig
from .hookspec import CondaSpecs
from .subcommands.doctor import health_checks

if TYPE_CHECKING:
    from collections.abc import Callable, Iterable
    from typing import Literal

    from requests.auth import AuthBase

    from ..common.path import PathType
    from ..core.path_actions import Action
    from ..core.solve import Solver
    from ..models.match_spec import MatchSpec
    from ..models.records import PackageRecord
    from .types import (
        CondaAuthHandler,
        CondaEnvironmentExporter,
        CondaEnvironmentSpecifier,
        CondaHealthCheck,
        CondaPackageExtractor,
        CondaPostCommand,
        CondaPostSolve,
        CondaPostTransactionAction,
        CondaPreCommand,
        CondaPrefixDataLoader,
        CondaPrefixDataLoaderCallable,
        CondaPreSolve,
        CondaPreTransactionAction,
        CondaReporterBackend,
        CondaRequestHeader,
        CondaSetting,
        CondaSolver,
        CondaSubcommand,
        CondaVirtualPackage,
    )

log = logging.getLogger(__name__)


class CondaPluginManager(pluggy.PluginManager):
    """
    The conda plugin manager to implement behavior additional to pluggy's default plugin manager.
    """

    get_cached_solver_backend: Callable[[str | None], type[Solver]]
    """Cached version of the :meth:`~conda.plugins.manager.CondaPluginManager.get_solver_backend` method."""

    get_cached_session_headers: Callable[[str], dict[str, str]]
    """Cached version of the :meth:`~conda.plugins.manager.CondaPluginManager.get_session_headers` method."""

    get_cached_request_headers: Callable[[str, str], dict[str, str]]
    """Cached version of the :meth:`~conda.plugins.manager.CondaPluginManager.get_request_headers` method."""

    def __init__(self, *args, **kwargs):
        super().__init__(APP_NAME, *args, **kwargs)
        # Make the cache containers local to the instances so that the
        # reference from cache to the instance gets garbage collected with the instance
        self.get_cached_solver_backend = functools.cache(self.get_solver_backend)
        self.get_cached_session_headers = functools.cache(self.get_session_headers)
        self.get_cached_request_headers = functools.cache(self.get_request_headers)

    def get_canonical_name(self, plugin: object) -> str:
        # detect the fully qualified module name
        prefix = "<unknown_module>"
        if (module := getmodule(plugin)) and module.__spec__:
            prefix = module.__spec__.name

        # return the fully qualified name for modules
        if module is plugin:
            return prefix

        # return the fully qualified name for classes
        elif isclass(plugin):
            return f"{prefix}.{plugin.__qualname__}"

        # return the fully qualified name for instances
        else:
            return f"{prefix}.{plugin.__class__.__qualname__}[{id(plugin)}]"

    def register(self, plugin, name: str | None = None) -> str | None:
        """
        Call :meth:`pluggy.PluginManager.register` and return the result or
        ignore errors raised, except ``ValueError``, which means the plugin
        had already been registered.
        """
        try:
            # register plugin but ignore ValueError since that means
            # the plugin has already been registered
            return super().register(plugin, name=name)
        except ValueError:
            return None
        except Exception as err:
            raise PluginError(
                f"Error while loading conda plugin: "
                f"{name or self.get_canonical_name(plugin)} ({err})"
            ) from err

    def load_plugins(self, *plugins) -> int:
        """
        Load the provided list of plugins and fail gracefully on error.
        The provided list of plugins can either be classes or modules with
        :attr:`~conda.plugins.hookimpl`.
        """
        count = 0
        for plugin in plugins:
            if self.register(plugin):
                count += 1
        return count

    def load_entrypoints(self, group: str, name: str | None = None) -> int:
        """Load modules from querying the specified setuptools ``group``.

        :param str group: Entry point group to load plugins.
        :param str name: If given, loads only plugins with the given ``name``.
        :rtype: int
        :return: The number of plugins loaded by this call.
        """
        count = 0
        for dist in distributions():
            for entry_point in dist.entry_points:
                # skip entry points that don't match the group/name
                if entry_point.group != group or (
                    name is not None and entry_point.name != name
                ):
                    continue

                # attempt to load plugin from entry point
                try:
                    plugin = entry_point.load()
                except Exception as err:
                    # not using exc_info=True here since the CLI loggers are
                    # set up after CLI initialization and argument parsing,
                    # meaning that it comes too late to properly render
                    # a traceback; instead we pass exc_info conditionally on
                    # context.verbosity
                    log.warning(
                        f"Error while loading conda entry point: {entry_point.name} ({err})",
                        exc_info=err if context.info else None,
                    )
                    continue

                if self.register(plugin):
                    count += 1
        return count

    @overload
    def get_hook_results(
        self, name: Literal["subcommands"]
    ) -> list[CondaSubcommand]: ...

    @overload
    def get_hook_results(
        self, name: Literal["virtual_packages"]
    ) -> list[CondaVirtualPackage]: ...

    @overload
    def get_hook_results(self, name: Literal["solvers"]) -> list[CondaSolver]: ...

    @overload
    def get_hook_results(
        self, name: Literal["pre_commands"]
    ) -> list[CondaPreCommand]: ...

    @overload
    def get_hook_results(
        self, name: Literal["post_commands"]
    ) -> list[CondaPostCommand]: ...

    @overload
    def get_hook_results(
        self, name: Literal["auth_handlers"]
    ) -> list[CondaAuthHandler]: ...

    @overload
    def get_hook_results(
        self, name: Literal["health_checks"]
    ) -> list[CondaHealthCheck]: ...

    @overload
    def get_hook_results(self, name: Literal["pre_solves"]) -> list[CondaPreSolve]: ...

    @overload
    def get_hook_results(
        self, name: Literal["post_solves"]
    ) -> list[CondaPostSolve]: ...

    @overload
    def get_hook_results(
        self, name: Literal["session_headers"], *, host: str
    ) -> list[CondaRequestHeader]: ...

    @overload
    def get_hook_results(
        self, name: Literal["request_headers"], *, host: str, path: str
    ) -> list[CondaRequestHeader]: ...

    @overload
    def get_hook_results(self, name: Literal["settings"]) -> list[CondaSetting]: ...

    @overload
    def get_hook_results(
        self, name: Literal["reporter_backends"]
    ) -> list[CondaReporterBackend]: ...

    @overload
    def get_hook_results(
        self, name: Literal["pre_transaction_actions"]
    ) -> list[CondaPreTransactionAction]: ...

    @overload
    def get_hook_results(
        self, name: Literal["post_transaction_actions"]
    ) -> list[CondaPostTransactionAction]: ...

    @overload
    def get_hook_results(
        self, name: Literal["prefix_data_loaders"]
    ) -> list[CondaPrefixDataLoader]: ...

    @overload
    def get_hook_results(
        self, name: Literal["environment_specifiers"]
    ) -> list[CondaEnvironmentSpecifier]: ...

    @overload
    def get_hook_results(
        self, name: Literal["package_extractors"]
    ) -> list[CondaPackageExtractor]: ...

    @overload
    def get_hook_results(
        self, name: Literal["environment_exporters"]
    ) -> list[CondaEnvironmentExporter]: ...

    def get_hook_results(self, name, **kwargs):
        """
        Return results of the plugin hooks with the given name and
        raise an error if there is a conflict.
        """
        specname = f"{self.project_name}_{name}"  # e.g. conda_solvers
        hook = getattr(self.hook, specname, None)
        if hook is None:
            raise PluginError(f"Could not find requested `{name}` plugins")

        # hook() returns a generator of all plugins for a given specname,
        # unfortunately this generator does not offer any information about which
        # package/module the plugin is defined in, this makes reporting errors in
        # a meaningful way to users difficult
        plugins = [plugin for plugins in hook(**kwargs) for plugin in plugins]

        # Validate plugin names since plugins may not properly inherit from CondaPlugin
        invalid = [
            plugin
            for plugin in plugins
            if not hasattr(plugin, "name")
            or not isinstance(plugin.name, str)
            or plugin.name != plugin.name.lower().strip()
        ]
        if invalid:
            raise PluginError(
                f"Invalid plugin names found for `{name}`:\n"
                f"{dashlist(map(repr, invalid))}\n"
                f"\n"
                f"Please report this issue to the plugin author(s)."
            )

        # Check for conflicts since no two plugins can have the same name
        seen = set()
        conflicts = [
            plugin for plugin in plugins if plugin.name in seen or seen.add(plugin.name)
        ]
        if conflicts:
            raise PluginError(
                f"Conflicting plugins found for `{name}`:\n"
                f"{dashlist(map(repr, conflicts))}\n"
                f"\n"
                f"Multiple conda plugins are registered via the `{specname}` hook. "
                f"Please make sure that you don't have any incompatible plugins installed."
            )

        return sorted(plugins, key=lambda plugin: plugin.name)

    def get_solvers(self) -> dict[str, CondaSolver]:
        """Return a mapping from solver name to solver class."""
        return {
            solver_plugin.name: solver_plugin
            for solver_plugin in self.get_hook_results("solvers")
        }

    def get_solver_backend(self, name: str | None = None) -> type[Solver]:
        """
        Get the solver backend with the given name (or fall back to the
        name provided in the context).

        See ``context.solver`` for more details.

        Please use the cached version of this method called
        :meth:`get_cached_solver_backend` for high-throughput code paths
        which is set up as a instance-specific LRU cache.
        """
        # Some light data validation in case name isn't given.
        name = (name or context.solver).lower().strip()

        solvers_mapping = self.get_solvers()

        # Look up the solver mapping and fail loudly if it can't
        # find the requested solver.
        solver_plugin = solvers_mapping.get(name, None)
        if solver_plugin is None:
            raise CondaValueError(
                f"You have chosen a non-default solver backend ({name}) "
                f"but it was not recognized. Choose one of: "
                f"{', '.join(solvers_mapping)}"
            )

        return solver_plugin.backend

    def get_auth_handler(self, name: str) -> type[AuthBase] | None:
        """
        Get the auth handler with the given name or None
        """
        name = name.lower().strip()
        auth_handlers = self.get_hook_results("auth_handlers")
        matches = [item for item in auth_handlers if item.name == name]

        if len(matches) > 0:
            return matches[0].handler
        return None

    def get_settings(self) -> dict[str, CondaSetting]:
        """
        Return a mapping of plugin setting name to CondaSetting objects.

        This method intentionally overwrites any duplicates that may be present
        """
        return {
            config_param.name: config_param
            for config_param in self.get_hook_results("settings")
        }

    def invoke_pre_commands(self, command: str) -> None:
        """
        Invokes ``CondaPreCommand.action`` functions registered with ``conda_pre_commands``.

        :param command: name of the command that is currently being invoked
        """
        for hook in self.get_hook_results("pre_commands"):
            if command in hook.run_for:
                hook.action(command)

    def invoke_post_commands(self, command: str) -> None:
        """
        Invokes ``CondaPostCommand.action`` functions registered with ``conda_post_commands``.

        :param command: name of the command that is currently being invoked
        """
        for hook in self.get_hook_results("post_commands"):
            if command in hook.run_for:
                hook.action(command)

    def disable_external_plugins(self) -> None:
        """
        Disables all currently registered plugins except built-in conda plugins
        """
        for name, plugin in self.list_name_plugin():
            if not name.startswith("conda.plugins.") and not self.is_blocked(name):
                self.set_blocked(name)

    def get_subcommands(self) -> dict[str, CondaSubcommand]:
        return {
            subcommand.name: subcommand
            for subcommand in self.get_hook_results("subcommands")
        }

    def get_health_checks(self) -> dict[str, CondaHealthCheck]:
        """Return a mapping of health check name to health check."""
        return {check.name: check for check in self.get_hook_results("health_checks")}

    def get_reporter_backends(self) -> tuple[CondaReporterBackend, ...]:
        return tuple(self.get_hook_results("reporter_backends"))

    def get_reporter_backend(self, name: str) -> CondaReporterBackend:
        """
        Attempts to find a reporter backend while providing a fallback option if it is
        not found.

        This method must return a valid ``CondaReporterBackend`` object or else it will
        raise an exception.
        """
        reporter_backends_map = {
            reporter_backend.name: reporter_backend
            for reporter_backend in self.get_reporter_backends()
        }
        reporter_backend = reporter_backends_map.get(name, None)
        if reporter_backend is None:
            log.warning(
                f'Unable to find reporter backend: "{name}"; '
                f'falling back to using "{DEFAULT_CONSOLE_REPORTER_BACKEND}"'
            )
            return reporter_backends_map.get(DEFAULT_CONSOLE_REPORTER_BACKEND)
        else:
            return reporter_backend

    def get_virtual_package_records(self) -> tuple[PackageRecord, ...]:
        return tuple(
            virtual_package
            for hook in self.get_hook_results("virtual_packages")
            if (virtual_package := hook.to_virtual_package()) is not NULL
        )

    def get_session_headers(self, host: str) -> dict[str, str]:
        return {
            hook.name: hook.value
            for hook in self.get_hook_results("session_headers", host=host)
        }

    def get_request_headers(self, host: str, path: str) -> dict[str, str]:
        return {
            hook.name: hook.value
            for hook in self.get_hook_results("request_headers", host=host, path=path)
        }

    def get_prefix_data_loaders(self) -> Iterable[CondaPrefixDataLoaderCallable]:
        for hook in self.get_hook_results("prefix_data_loaders"):
            yield hook.loader

    def invoke_pre_solves(
        self,
        specs_to_add: frozenset[MatchSpec],
        specs_to_remove: frozenset[MatchSpec],
    ) -> None:
        """
        Invokes ``CondaPreSolve.action`` functions registered with ``conda_pre_solves``.

        :param specs_to_add:
        :param specs_to_remove:
        """
        for hook in self.get_hook_results("pre_solves"):
            hook.action(specs_to_add, specs_to_remove)

    def invoke_post_solves(
        self,
        repodata_fn: str,
        unlink_precs: tuple[PackageRecord, ...],
        link_precs: tuple[PackageRecord, ...],
    ) -> None:
        """
        Invokes ``CondaPostSolve.action`` functions registered with ``conda_post_solves``.

        :param repodata_fn:
        :param unlink_precs:
        :param link_precs:
        """
        for hook in self.get_hook_results("post_solves"):
            hook.action(repodata_fn, unlink_precs, link_precs)

    def load_settings(self) -> None:
        """
        Iterates through all registered settings and adds them to the
        :class:`conda.common.configuration.PluginConfig` class.
        """
        for name, setting in self.get_settings().items():
            PluginConfig.add_plugin_setting(name, setting.parameter, setting.aliases)

    def get_config(self, data) -> PluginConfig:
        """
        Retrieve the configuration for the plugin.
        Returns:
            PluginConfig: The configuration object for the plugin, initialized with raw data from the context.
        """
        return PluginConfig(data)

    def get_environment_specifiers(self) -> dict[str, CondaEnvironmentSpecifier]:
        """
        Returns a mapping from environment specifier name to environment specifier.
        """
        return {
            hook.name: hook for hook in self.get_hook_results("environment_specifiers")
        }

    def get_environment_specifier_by_name(
        self,
        source: str,
        name: str,
    ) -> CondaEnvironmentSpecifier:
        """Get an environment specifier plugin by name

        :param source: full path to the environment spec file/source
        :param name: name of the environment plugin to load
        :raises CondaValueError: if the requested plugin is not available.
        :raises PluginError: if the requested plugin is unable to handle the provided file.
        :returns: an environment specifier plugin that matches the provided plugin name, or can handle the provided file
        """
        name = name.lower().strip()
        plugins = self.get_environment_specifiers()
        try:
            plugin = plugins[name]
        except KeyError:
            raise CondaValueError(
                f"You have chosen an unrecognized environment"
                f" specifier type ({name}). Choose one of: "
                f"{dashlist(plugins)}"
            )
        else:
            # Try to load the plugin and check if it can handle the environment spec
            try:
                if plugin.environment_spec(source).can_handle():
                    return plugin
            except Exception as e:
                raise PluginError(
                    dals(
                        f"""
                        An error occured when handling '{source}' with plugin '{name}'.

                        {type(e).__name__}: {e}
                        """
                    )
                )
            else:
                # If the plugin was not able to handle the environment spec, raise an error
                raise PluginError(
                    f"Requested plugin '{name}' is unable to handle environment spec '{source}'"
                )

    def detect_environment_specifier(self, source: str) -> CondaEnvironmentSpecifier:
        """Detect the environment specifier plugin for a given spec source

        Raises PluginError if more than one environment_spec plugin is found to be able to handle the file.
        Raises EnvironmentSpecPluginNotDetected if no plugins were found.

        :param source: full path to the environment spec file or source
        :returns: an environment specifier plugin that can handle the provided file
        """
        hooks = self.get_environment_specifiers()
        found = []
        autodetect_disabled_plugins = []
        for hook_name, hook in hooks.items():
            if hook.environment_spec.detection_supported:
                log.debug("EnvironmentSpec hook: checking %s", hook_name)
                try:
                    if hook.environment_spec(source).can_handle():
                        log.debug(
                            "EnvironmentSpec hook: %s can be %s",
                            source,
                            hook_name,
                        )
                        found.append(hook)
                    else:
                        log.debug(
                            "EnvironmentSpec hook: %s can NOT be handled by %s",
                            source,
                            hook_name,
                        )
                except Exception as e:
                    log.error(
                        "EnvironmentSpec hook: an error occurred when handling '%s' with plugin '%s'. %s",
                        source,
                        hook_name,
                        e,
                    )
                    log.debug("%r", e, exc_info=e)
            else:
                log.debug(
                    "EnvironmentSpec hook: %s can NOT be handled by %s",
                    source,
                    hook_name,
                )
                autodetect_disabled_plugins.append(hook_name)

        if not found:
            # HACK: if there was no plugin found, try to catch all `environment.yml` plugin
            # FUTURE: Remove this final try at using the environment.yml to read the environment
            # file. This should be removed in "26.9" when the deprecations warning for
            # environment.yml's that are not compliant with cep-0024 are removed.
            try:
                return self.get_environment_specifier_by_name(
                    source=source, name="environment.yml"
                )
            except (PluginError, CondaValueError) as exc:
                # raise error if no plugins found that can read the environment file
                raise EnvironmentSpecPluginNotDetected(
                    name=source,
                    plugin_names=hooks,
                    autodetect_disabled_plugins=autodetect_disabled_plugins,
                ) from exc
        elif len(found) == 1:
            # return the plugin if only one is found
            return found[0]
        else:
            # raise an error if there is more than one plugin found
            raise PluginError(
                dals(
                    f"""
                    Too many plugins found that can handle the environment file '{source}':

                    {", ".join([hook.name for hook in found])}

                    Please make sure that you don't have any overlapping plugins installed.
                """
                )
            )

    def get_environment_specifier(
        self,
        source: str,
        name: str | None = None,
    ) -> CondaEnvironmentSpecifier:
        """Get the environment specifier plugin for a given spec source, or given a plugin name
        Raises PluginError if more than one environment_spec plugin is found to be able to handle the file.
        Raises EnvironmentSpecPluginNotDetected if no plugins were found.
        Raises CondaValueError if the requested plugin is not available.

        :param filename: full path to the environment spec file/source
        :param name: name of the environment plugin to load
        :returns: an environment specifier plugin that matches the provided plugin name, or can handle the provided file
        """
        if not name:
            return self.detect_environment_specifier(source)
        else:
            return self.get_environment_specifier_by_name(source=source, name=name)

    def get_environment_exporters(self) -> Iterable[CondaEnvironmentExporter]:
        """
        Yields all detected environment exporters.
        """
        yield from self.get_hook_results("environment_exporters")

    def get_exporter_format_mapping(self) -> dict[str, CondaEnvironmentExporter]:
        """
        Get a mapping from format names (including aliases) to environment exporters.

        :return: Dict mapping format name to CondaEnvironmentExporter
        :raises PluginError: If multiple exporters use the same format name or alias
        """
        mapping = {}
        conflicts = {}  # format_name -> set of plugin names

        for plugin in self.get_environment_exporters():
            for format_name in (plugin.name, *plugin.aliases):
                if format_name in mapping:
                    if format_name not in conflicts:
                        conflicts[format_name] = {mapping[format_name].name}
                    conflicts[format_name].add(plugin.name)
                else:
                    mapping[format_name] = plugin

        if conflicts:
            conflict_details = []
            for format_name, plugin_names in sorted(conflicts.items()):
                plugins_str = ", ".join(sorted(plugin_names))
                conflict_details.append(
                    f"'{format_name}' used by plugins: {plugins_str}"
                )

            raise PluginError(
                f"Format name conflicts detected in environment exporters:"
                f"{dashlist(conflict_details)}\n"
                f"Multiple plugins cannot use the same format name or alias."
            )

        return mapping

    def detect_environment_exporter(self, filename: str) -> CondaEnvironmentExporter:
        """
        Detect an environment exporter based on exact filename matching against default_filenames.

        :param filename: Filename to find an exporter for (basename is used for detection)
        :return: CondaEnvironmentExporter that supports the filename
        :raises EnvironmentExporterNotDetected: If no exporter supports the filename
        :raises PluginError: If multiple exporters claim to support the same filename
        """
        # Extract just the basename for matching
        basename = os.path.basename(filename)

        matches = []
        for exporter_config in self.get_environment_exporters():
            # Check if basename exactly matches any of the default filenames
            if basename in exporter_config.default_filenames:
                matches.append(exporter_config)

        if not matches:
            raise EnvironmentExporterNotDetected(
                filename=basename,
                exporters=self.get_environment_exporters(),
            )
        elif len(matches) > 1:
            raise PluginError(
                f"Multiple environment exporters found that can handle filename '{basename}':"
                f"{dashlist([match.name for match in matches])}\n"
                f"\n"
                f"Please make sure that you don't have any conflicting exporter plugins installed."
            )
        return matches[0]

    def get_environment_exporter_by_format(
        self, format_name: str
    ) -> CondaEnvironmentExporter:
        """
        Get an environment exporter based on the format name.

        :param format_name: Format name to find an exporter for (e.g., 'yaml', 'json', 'environment-yaml')
        :return: CondaEnvironmentExporter that supports the format
        :raises CondaValueError: If no exporter is found for the given format
        """
        format_mapping = self.get_exporter_format_mapping()
        exporter = format_mapping.get(format_name)

        if exporter is None:
            raise CondaValueError(
                f"Unknown export format '{format_name}'. "
                f"Available formats:{dashlist(sorted(format_mapping.keys()))}"
            )

        return exporter

    def get_pre_transaction_actions(
        self,
        transaction_context: dict[str, str] | None = None,
        target_prefix: str | None = None,
        unlink_precs: Iterable[PackageRecord] | None = None,
        link_precs: Iterable[PackageRecord] | None = None,
        remove_specs: Iterable[MatchSpec] | None = None,
        update_specs: Iterable[MatchSpec] | None = None,
        neutered_specs: Iterable[MatchSpec] | None = None,
    ) -> list[Action]:
        """Get the plugin-defined pre-transaction actions.

        :param transaction_context: Mapping between target prefixes and PrefixActions
            instances
        :param target_prefix: Target prefix for the action
        :param unlink_precs: Package records to be unlinked
        :param link_precs: Package records to link
        :param remove_specs: Specs to be removed
        :param update_specs: Specs to be updated
        :param neutered_specs: Specs to be neutered
        :return: The plugin-defined pre-transaction actions
        """
        return [
            hook.action(
                transaction_context,
                target_prefix,
                unlink_precs,
                link_precs,
                remove_specs,
                update_specs,
                neutered_specs,
            )
            for hook in self.get_hook_results("pre_transaction_actions")
        ]

    def get_post_transaction_actions(
        self,
        transaction_context: dict[str, str] | None = None,
        target_prefix: str | None = None,
        unlink_precs: Iterable[PackageRecord] | None = None,
        link_precs: Iterable[PackageRecord] | None = None,
        remove_specs: Iterable[MatchSpec] | None = None,
        update_specs: Iterable[MatchSpec] | None = None,
        neutered_specs: Iterable[MatchSpec] | None = None,
    ) -> list[Action]:
        """Get the plugin-defined post-transaction actions.

        :param transaction_context: Mapping between target prefixes and PrefixActions
            instances
        :param target_prefix: Target prefix for the action
        :param unlink_precs: Package records to be unlinked
        :param link_precs: Package records to link
        :param remove_specs: Specs to be removed
        :param update_specs: Specs to be updated
        :param neutered_specs: Specs to be neutered
        :return: The plugin-defined post-transaction actions
        """
        return [
            hook.action(
                transaction_context,
                target_prefix,
                unlink_precs,
                link_precs,
                remove_specs,
                update_specs,
                neutered_specs,
            )
            for hook in self.get_hook_results("post_transaction_actions")
        ]

    def get_package_extractors(self) -> dict[str, CondaPackageExtractor]:
        """
        Return a mapping from file extension to package extractor plugin.

        Extensions are lowercased for case-insensitive matching.

        :return: Dictionary mapping lowercased extensions (e.g., ``".conda"``) to their
            :class:`~conda.plugins.types.CondaPackageExtractor` plugins.
        """
        return {
            extension.lower(): hook
            for hook in self.get_hook_results("package_extractors")
            for extension in hook.extensions
        }

    def get_package_extractor(
        self,
        source_full_path: PathType,
    ) -> CondaPackageExtractor:
        """
        Get the package extractor plugin for a given package path.

        Searches through registered package extractor plugins to find one that
        handles the file extension of the provided package path.

        :param source_full_path: Full path to the package archive file.
        :return: The matching :class:`~conda.plugins.types.CondaPackageExtractor` plugin.
        :raises PluginError: If no registered extractor handles the file extension.
        """
        source_str = os.fspath(source_full_path).lower()
        for extension, extractor in self.get_package_extractors().items():
            if source_str.endswith(extension):
                return extractor

        raise PluginError(
            f"No registered 'package_extractors' plugin found for package: {source_full_path}"
        )

    def extract_package(
        self,
        source_full_path: PathType,
        destination_directory: PathType,
    ) -> None:
        """
        Extract a package archive to a destination directory.

        Finds the appropriate extractor plugin based on the file extension
        and extracts the package.

        :param source_full_path: Full path to the package archive file.
        :param destination_directory: Directory to extract the package contents to.
        :raises PluginError: If no registered extractor handles the file extension.
        """
        extractor = self.get_package_extractor(source_full_path)
        extractor.extract(source_full_path, destination_directory)

    def has_package_extension(self, path: PathType) -> str | None:
        """
        Check if a path has a supported package file extension.

        :param path: Path to check.
        :return: The matched extension (lowercased) if found, None otherwise.
        """
        path_str = os.fspath(path).lower()
        for ext in self.get_package_extractors():
            if path_str.endswith(ext):
                return ext
        return None


@functools.cache
def get_plugin_manager() -> CondaPluginManager:
    """
    Get a cached version of the :class:`~conda.plugins.manager.CondaPluginManager` instance,
    with the built-in and entrypoints provided by the plugins loaded.
    """
    plugin_manager = CondaPluginManager()
    plugin_manager.add_hookspecs(CondaSpecs)
    plugin_manager.load_plugins(
        solvers,
        *virtual_packages.plugins,
        *subcommands.plugins,
        *health_checks.plugins,
        *post_solves.plugins,
        *reporter_backends.plugins,
        *package_extractors.plugins,
        *prefix_data_loaders.plugins,
        *environment_specifiers.plugins,
        *environment_exporters.plugins,
    )
    plugin_manager.load_entrypoints(APP_NAME)
    return plugin_manager